Protecting secure software in a multi-security-CPU system
US9183402B2 · kind B2 · utility
1Cited by
3References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 6, 2012 |
| Grant date | Nov 10, 2015 |
| Priority date | — |
| Expiry date | Dec 7, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/575
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computing system includes a first central processing unit (CPU) and a second CPU coupled with the first CPU and with a host processor. In response to a request by the host processor to boot the second CPU, the first CPU is configured to execute secure booting of the second CPU by decrypting encrypted code to generate decrypted code executable by the second CPU but that is inaccessible by the host processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.